European Extreme Events Climate Index

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What is the European Extreme Events Climate Index

The European Extreme Events Climate Index (E3CI) is an ensemble of indices aimed at providing information about the areas affected by different types of weather-induced hazards and the severity of such events. Currently, based on the corresponding index developed for North America (Actuaries Climate Index, ACI; actuariesclimateindex.org), E3CI includes five components returning information about main hazards: cold and heat stresses, droughts, extreme precipitations, extreme winds. Moreover, these components are combined into a single index, providing a general overview of the hazards. The data will be made available on different Administrative unit levels; currently, data is released at Country level.

The assessment of the components exploits ERA5 (doi:10.24381/cds.adbb2d47), the fifth-generation atmospheric reanalysis produced by European Centre for Medium-Range Weather Forecasts [ECMWF] (https://youtu.be/FAGobvUGl24). ERA5 covers the entire Globe on regular latitude-longitude grids at 0.25° x 0.25° resolution from January 1950 to present. Hourly data on many atmospheric parameters together with estimates of uncertainty are available on Climate Data Store of Copernicus Climate Change Service [C3S]. ERA5 is updated daily with a latency of about 5 days permitting a constant update of the components forming E3CI.

Each component uses an indicator as proxy for several hazards. The reference value is computed on 1981-2010 time span while, at monthly basis, E3CI shows a standardized anomaly with respect to the reference values.

Disclaimer:
E3CI data is generated using Copernicus Climate Change Service information [2021]. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.

See the variations by country and by component

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